Sample

CHEMICAL DETAILS SAMPLE ORIGIN SAMPLE PREP./SIZE PYROL. CONDITIONS TOTAL ION COUNTS

BOG PEAT see ref. 50

Bad-Zwischenahn GFR; depth >250 cm suspension in methanol; approx. 25 ng standard not determined remarks - Bog peat is composed to a large extent of wool grass and other plant residues. Therefore it contains grass lignins characterised by the presence of methoxylated phenolic series derived from guaiacylic (m/z 124, 138, 150) as well as syringylic (weak signal at m/z 154) building blocks, in addition to the nonmethoxylated phenols (m/z 94, 108, 120, 134) also found in sphagnum peat (Spectrum F.15). Note also the characteristic methane peak (m/z 16) encountered in pyrolysis mass spectra of methoxylated lignins (Spectra E.9, E.10).

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